1 January 2023
⇐20221231 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230102⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W02S16
(35",-216") 		E09-W13
(22) 		3.5 -1.8 -9.8e20
2 E05N38
(-62",649") 		E18-W14
(32) 		1.2 -5.1 -1.2e21
3 W42S76
(158",-937") 		E24-W64
(88) 		0.4 -0.2 -5.6e19
4 W38S49
(391",-714") 		W29-W50
(21) 		0.1 -0.3 -1.0e19
5 W17S02
(282",21") 		W14-W20
(6) 		0.1 -1.0 -1.8e19
6 W65S66
(352",-885") 		W53-W73
(20) 		0.0 -0.7 -1.7e19
7 W16S05
(264",-27") 		W14-W18
(4) 		0.0 -2.4 -1.3e19

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 1-Jan-2023 20:30 UT .